Shock-absorber for dump-cars



a. E. CAHTZDAFN'ER. SHOCK ABSORBER FOR DUMP CARS.

APPLICATION FILED NOV- 23. 19l8.

Patented Apr. 19, 1921.

2: iii: 100

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ml Mb "II 100 m UNITED STATES PATENT OFFICE.

ROY E. GARTZDAFNER, 0F PASSAIG,

RATION, OF NEW YORK,

SHOCK-ABSORBER FOR DUMP-CARS.

Specification of Letters Patent.

Original application filed October 27, 1916, Serial No. 128,110. Divided and this application filed November 23, 1918. Serial No. 263,825.

State of New Jersey, have invented an 1mprovement in Shock-Absorbers for Dump-' Cars, of which the following is a specification.

This invention relates to dump cars, and with regard to certain more specific features, to a shock-absorber therefor. This application is a division of my application, Serial No. 128,110, filed October 27, 1916.

The principal object of the invention claimed in the present application is the provision of an improved arrangement of shock-absorbers for resiliently limiting the dumping movement of the car. Other objects will be in part obvious and in part pointed out hereinafter.

The invention accordingly comprises the features of construction and operation, combinations of elements, and arrangements of parts which are exemplified in the structure hereinafter described and the scope of the application of which will be indicated in the following claim.

In the accompanying drawings, in which is shown one of various possible embodiments of this invention,

Figure l is a transverse sectional elevation showing a dump car with shock absorbers applied thereto.

Fig. 2 is a similar sectional view but showing the car in dumping position.

Referring now drawings there is illustrated a dump car having a body 13 with a floor 11 carried by a truck comprising the truck bolsters 23 and center sill 4: on which are carried car supporting standards 46. The car body is pivotally mounted upon the standards e6 by means of pivot bolts 49, and is normally held against lateral movement by means of compression members 81 and engaging rollers 89 and 90 carried in gusset plates 58 securedto the car body. When the car is to be dumped, one or the other of the compression members 81, is raised out of operative position by means of a rock shaft 85 or 86 having an arm and link connection 87 to the compression member.

to the accomp anying The shock upon the swinging car body due to the impact between the blocks 95, 97 and 96, 98, respectively, is cushioned by the shock absorbers 61, 62, mounted upon the bolster beams 57. Each of these shock absorbers comprises a horizontal floating pin 100, on which are mounted the oppositely disposed wedge-shaped friction blocks 101, spring-pressed toward each other by the compression springs 102. As the block 95, for example, is forced upward by impact of its downwardly projecting shank against the fixed block or abutment 97, a lower wedge 104 on the sliding block 95 forces the blocks 101 upward against the upper wedge 105, in opposition to the compression springs 102, and this cushioning movement of the sliding block 95 protects the car body and associated parts from the heavy shocks they might otherwise receive at the end of the dumping movement. The lower wedges 10a are suitably supported as at 104 in operative relation to the side wedges 101 and upper wedges 105, whereby the movement of the lower wedges away from the upper wedges is limited to the desired amount.

My invention is obviously not limited to the embodiment illustrated in the accompanying drawings.

1 claim as my invention:

A shock absorber for tilting body dump cars combining a wedge adapted to be secured to the tilting car body, a second wedge facing the first wedge limited in its movement away from the first wedge and having a shank projecting downwardly to engage an abutment fixed on the under-frame of the car as the car reaches dumping position and arranged to be forced toward said first wedge by said abutment, a transverse floating pin between said wedge members, a pair of opposed wedges slidably mounted on said pin and frictionally engaging the first and second wedges and compression springs between said wedges and the ends of the pin substantially as described.

In testimony whereof, I have signed my name to this specification this 22nd day of November, 1918.

ROY E. CABTZDAFNER. 

